Pipe joint



l.. .1.v RoLLlNs April 18, 1933.

RIPE JOINT Filed Oct. 5, 1929 gmc/Wto@ e v] H0/lime I --l- I1 Y v 'Patented Apr. 1s, v1933 l UNITED STATES PATENT OFFICE LEVY J' ROLLINS, 0F BEAUMONT, TEXAS, ASSIGNOR 0F ONE-HALF T0 PETE D. RENFRO, F BEAUMONT, TEXAS f PIPE JOINT application medioctorber 5, `1929. serial N0.'397,e59.

This invention relates to a means for weld-`V ing individual pipe Ysections together, and

has for an object the provision of a tongue and groovearrangement at each end of a p-ipe section, whereby the same may be interlocked with a similar tongue and groove arrangement on another pipe section p'rior'to welding said sections together, to aiford'ajoint of maximum'strength and eiciency.

Other objects of this invention will become apparent as the description thereof proceeds reference being had to the accompanying drawing wherein :--v 4 ofthe pipe section, Y Y l Figure 2 is an end view of thesame, and Figure 3 is an elevationalview ofthe interlocked ends of two pipe sections prior to welding.

On e-achend of a metallic pipe section l,

' that is capable of being welded as by electric or acetylene welding, are formed tongues 2 and grooves 3, the tongue and groove at one end being oppositely disposed from the tongue and groove on the other end, as clearly shown in Figure 1,. To form the tongue 2 and groove 3, two juxtaposed circumferential segmental portions of vequal width at each end ofthe pipe are cut away, `said'segm'ental portions'being designated by the letters A and B in Figures l and 2. As will be noted, the

segment B is'of much greater circumferen-V tial length than the segmentv Athereby-forming two substantially diametricallyv opposed tongues 2 and grooves 3 on the ends of the pipe l when the segment A and said segment B are removed. f v

To jointwo pipe sections l and ltogether the tongues 2 of one pipe section are inserted 40 in the grooves 3 ofthe other pipe section in Y the manner shown in Figure 3. The abutting edges are then welded together as at 4 in the manner well known' in the art..

If desired the edgesV of the tongues and grooves may be beveled as at 5, see Figure 3, .i

to facilitate ease in welding, the abutting edges together and to increase lthe eiciency of the Joint. Y

Pipe sections joinedand welded together Figure'l is an elevational View of one end in the manner described aboveare practically Y indestructible at the joints, due to the interlocking of the ends, and while a preferred embodiment thereof has been shown the same is susceptible of various changes within the scope of the appended claim. y L3 y Having thus described my invention, what I claim as new and desire to secure by Letters Patentis:

A welded pipe joint comprising two metal pipe sections having similar Vbut oppositely disposed interlocking means on the end portions thereof and constituting an integral Y part of the pipeA proper, said interlocking means comprising a pair'. of Ytongues and .f grooves cut from the end portions of the pipe CU proper, the-tongues andgrooves on one end o f the pipe extending in an opposite direction from the tongues and grooves on the other end thereof, the tongues and grooves being of equal size in all dimensions, the tongues extending radially a substantial distance greater than the width of the grooves and lying in a cylindrical plane having the same radius as thatl of the pipe section,

In testimony whereof I affix my signature.

LEVY J. ROLLINS.v 

